// 布局相关工具类

.border-box {
  box-sizing: border-box;
}

.absolute-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.middle-line {
  position: relative;

  --height: 100%;
  --bg-color: #fff;

  &::after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1px;
    height: var(--height);
    content: "";
    background-color: var(--bg-color);
    transform: translateY(-50%);
  }
}

